div .content {
    width: 1536px;
    height: 618px;
    background-color: #fff;
    margin-top: 60px;
    position: relative;
}

#universityName {
    width: 100%;
    height: 30px;
    padding-top: 30px;
    font-size: 24px;
    text-align: center;
}

.proDropDown {
    width: 75%;
}

.content > ul {
    width: 300px;
    height: 30px;
    background-color: pink;
    font-size: 18px;
}

.content > div > span {
    font-size: 18px;
    height: 30px;
    line-height: 30px;
    margin: 0 7px;
}

#proDrop {
    background-color: pink;

}

#proDrop > #shangxueDrop li {
    background-color: skyblue;
    padding-top: 10px;
    text-align: center;
}

#guidersBox {
    width: 764px;
    margin: auto;
}

.proRankBox {
    width: 268px;
    height: 300px;
    position: absolute;
    right: 94px;
    top: 95px;
    text-align: center;
}

.proRankBox > p {
    font-size: 22px;
}

.proRankBox > ul > li {
    font-size: 18px;
    padding-top: 16px;
}

#fresh {
    position: absolute;
    font-size: 24px;
    right: 415px;
    top: 65px;
}

#searchGuidersBox > input {
    position: absolute;
    width: 300px;
    top: 43px;
    right: 609px;
}

#searchGuidersBox > button {
    position: absolute;
    top: 43px;
    right: 609px;
}

#chatBox {
    display: flex;
    width: 100%;
    height: 100%;
    font-size: 16px;
    flex-direction: column;
    overflow: hidden;
}

#chatBox #messageShowBox {
    display: flex;
    width: 100%;
    height: 60%;
    overflow: auto;
    flex-direction: column;
    border-bottom: #f0f0f0 2px solid;
}

#chatBox #messageInputBox {
    width: 100%;
    height: 40%;
    background-color: #9ab4cd;
    display: flex;
    flex-direction: column;

}

#messageInputBox #additionalTools {
    background-color: #FFFFFF;
    width: 100%;
    height: 15%;
    border-bottom: #f0f0f0 2px solid;
}

/*输入框的修饰*/
#messageInputBox textarea {
    background-color: #9ab4cd;
    width: 100%;
    height: 68%;
    font-size: 18px;
    resize: none;
    border: none;
}

/*发送按钮*/
#messageInputBox button {
    position: relative;
    right: -88%;
    width: 8%;
    height: 17%;
    margin-bottom: 1rem;
    justify-content: center;
    align-items: baseline;
}

.operationButton {
    width: 62px;
    height: 28px;
    color: black;
    border-radius: 6px;
    background: #f2eded;
    cursor: pointer;
}

.operationButton:hover {
    background-color: #e2af42;
}

.myMessage {
    display: flex;
    color: #407d53;
    flex-direction: row-reverse;
}

.myMessage div {
    display: block;
}

.oppositeMessage {
    display: flex;
    color: #003152;
    flex-direction: row;
}

.outlineTips {
    display: flex;
    width: 200px;
    justify-content: center;
    color: #e6f3ff;
    margin-left: 21rem;
    background-color: #dadada;
    border-radius: 10px;
}